*1 The value of ±2σ when the outer diameter of a rod 10 mm in diameter is measured at the centre of the measuring area while the number of averaging measurements is set to 512.*2 The error when a moving rod 10 mm in diameter is measured within the measuring area of 10 x 20 mm.*3 1,200 samples/sec. when the mutual interference prevention function is used.*4 The connector section is excluded.